\( \overrightarrow{\mathrm{A}}=30 \hat{\mathrm{i}} \)
\( \phi=\overrightarrow{\mathrm{E}} \cdot \overrightarrow{\mathrm{A}} \)
\( \phi=(6 \hat{\mathrm{i}}+5 \hat{\mathrm{j}}+3 \hat{\mathrm{k}}) \cdot(30 \hat{\mathrm{i}}) \)
\( \phi=6 \times 30=180\)
($\sin 37^{\circ}=\frac{3}{5}$ લો)